Wagon-jack



Y (mmodel') J. W. CLARK.

WAGON JACK.

No. 414,678. Patented Nov. 12, 1889.

oeMA/w. M Witnesses Invent-,op

` w lr-7 "Das Attorney UNITED STATES PATENT OFFICE.

JOHN \V. CLARK, OF HAMILTON, OHIO.

WAGON-JACK.

SPECIFICATION- forming part of Letters Patent No. 414,678, dated November 1.2, 1889.

' Application ned August 28,1889. sean No. 322,170. (No model.)

2b a/ZZ 2,071,077?, it may concern:

Be it known that I, JOHN IV. CLARK, of llamilton, Butler county, Ohio, have invented certain new and useful Improvements in Wagon-Jacks, of which the followingl is a specification. I

This invention pertains to certain improvements in the construction of jacks designed for elevating and supporting wagon-axles when the wheels are to be re1novcd,&c.

My improvements will be readily understood from the following description, taken in connection With the accompanying drawings, in which- Figure l is a front elevation of a wagonjack embodying my improvement-s; Fig. 2, a rear elevation of the main portions of the same; Fig. 3, a horizontal section of the same in the plane of the axis of the lever-pivotg Fig. el, al horizontal section in the same plane, but upon a very much enlarged scale, of the parts contiguous to the lever-pivot; Fig. 5, a perspective view'ot' the front of the ratchetplate, and Fig. (3 a perspective view Vot the pawl shown in position in a port-ion of the lever-shank.

In the drawings, A indicates a base-piece or foot; B, an upright board secured at its lower end to the base-piece; C, braces at the foot of the upright connecting the uprightand basepiece; D, a ratchet-plate bolted against the front face of the upper end of the upright; E, ratchet-teeth projecting from the periphery of the ratchet-plate, these teeth extending around a portion only of the periphery of the plate; F, a lever-shank in the Jform of aplate lying against the side of and pivoted to the ratchet-plate, this lever-shank projecting out to the left to form a lever end to vengage the axle to be lifted, while its projection to the right is formed to receive a Wooden hand-lever; G, a hand-leverbolted to the levershanlc, whereby the lever-shank and lever become virtually a single lever-piece pivoted to the ratchet-plate; H, a pivotrbolt uniting the lever-shank to the ratchet-plate; J, a box-like projection from the rear face of the levershank at that portion of the lever-shank where the hand-lever is secured, this box-like projection forming a pawl-guide by having in each end wall a hole in which a pawl lits and slides; K, a pawl in the form of a square bar sliding through the holes in the end walls of the box-like projection, the pawl thus passing entirely through the box-like projection and having its inner end formed to engage properly With the teeth ot' the ratchet-plate; L, a spring coiled around the pawl within the box-like projection, one end of the spring abuttingV against the inner surface ot' the outer end Wall ol' the box-like projection, while the other end of the spring abuts against a pin put transversely through the pawl, the spring thus tending to urge the pawl into engagement with the teeth of the ratchet-plate; M, a linger-lever pivoted at the outer end ot the hand-lever and adapted to he vibrated by the hand in grasping the end ot the hand-lever; N, a pawl-rod lying along the rear face of the hand-lever, and connected at, one end with the linger-lever end and at the other end with the pawl, whereby by elevating the nger-lever the pawl may be moved outward against the resistance of its spring; O, a very large Washer upon the pivot-bolt II, and held by that holt against the front face of the lever-shank, the lever-shank thus being loosely clamped between the ratchet-plate and this Washer; and I), a boss formed upon the front face of the ratchet-plate and projecting therefrom into an appropriate pivot-aperture in the lever-shank, the boss thereby forming a pivot on which the lever-shank rocks and which supports the lever-shank, while the pivot-bolt and flange serve as means for preventing the side displacement of the lever-shank from the boss and for securing side steadiness in the motion.

The pivot-bolt 1nay,it desired, be drawn so tight as to frictionally clamp the lever-shank, so that the lever will be sustained in any po sition in which it may be placed, thus avoiding the accidental dropping of the lever, and also permitting of the lever being placed directly vertical, so that the device may, when not in use, stand in asmall space. XVhen the device is to be used, the lever is placed in a horizontal position with the left end of the lever-shank under the axle to loe elevated.v

The handle end of the lever is now depressed, thus elevating the axle, and the spring throws the pawl into engageinei'it with the appropriate ratchet-tooth, and the load will be sustained. When the load is to be lowered, the hand is placed upon the handle ot' the handlever and the finger-lever is pulled upward by the fingers of the hand, thus withdrawing the paWl and permitting the hand-lever to ris and the load to go down.

I claim as my invention- In a Wagon-jack, the combination, substantially as set forth, of a base-piece, an upright secured thereto, a ratchet-plate secured against lche face of the upper end of the upright, and having ratchet-teeth projecting from its periphery, and having a pivot-boss projecting from its outer face, a lever-shank pivoted on saidl pivot-boss and against the face of the ratchet-plate, and having projecreceive a hand-lever, respectively, and provided upon its face with aboX-like projection, a bolt clamping said lever-shank against said ratchet-plate, a pawl litt-ed to slide in the end Walls of said box-like projection and to engage the teeth of the ratchet-plate, a spring! upon said pawl arranged to press the pawl into engagement with the teeth of the ratchetplate, a hand-lever secured to the lever-shank, a lnger-lever pivoted at the end of the handlever, and a paWl-rod connected with the tinger-lever and pawl.

.JOHN lV. CLARK.

vWitnesses:

A. C. ROGERS, J. lV. SEE. 

